I arrive at the property on time.

I knock on the door 5 minutes after.

As close to exactly the start time as possible. That's when I was asked to arrive, so that's what I'll do. While I'm with many folks here in wanting to arrive early to avoid being late, parties are the one exception. I think it is more rude to be early to a party than late unless it is at a public venue where I can hang out while waiting without imposing on the host.

I must arrive everywhere 15 minutes early, minimum, or I die.

I blame my mother for terrorizing into me that being 15 minutes early is on time, and on time is late.

My husband hates it, but he accepts it over me vomiting from stress.

We also do not go to parties. So it's moot.

I arrive slightly early (5 mins early) because I always make up an excuse to leave early.

My pet peeve is when there's a party agenda (6pm arrival, 7pm food) and if it's 730pm and food still hasnt been served, I can kindly remind the host that I have to leave by 8pm.

When I attended parties in my 20s, this was a extremely common issue. But as I get older and have a significantly more mature group of friends, Im starting to not have to use my "leave early" excuse as frequently.

Depends on the party. I always arrive precisely when I plan to, haha.

Yeah on time. If they wanted to meet later then they would have said later. I could help them set up or whatever.

15-20 minutes late. Gives enough time for a few other people to show up, and 8/10 times the hosts will still be frantically running around trying to finish preparing if you show up right on time.

I'm Autistic so I never got the memo that you should arrive late to a party like most folks apparently do because of unwritten rule bullshit

That backfired several times and I would stand around or pace awkwardly

So I just don't go or if I have to go I show like a half hour late.

If I know most everyone there, especially the host, I show up on time.

If I don't know most of the people going, I show up like 30 min late so the social lubricant can start flowing a bit before they get introduced to their new best friend.

I'm not fond of parties myself, but when I go to one, I get there on time, wait for the food, then leave with a full stomach. I may wait for leftovers to take home, but it depends. All I care about is the free food.

I show up fashionably late with extra ice, snacks and drinks. But I stay late and help clean up.

When I feel like it during the slotted start and finish time. I don't make a big deal out of it really.